Don't cancel when naming a typedef.

frog/leg/namer.dart

 // Copyright (c) 2011, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 /**
  * Assigns JavaScript identifiers to Dart variables, class-names and members.
  */
 class Namer {
   final Compiler compiler;
 
@@ skipping 145 matching lines @@
         case ElementKind.PARAMETER:
           // The name is not guaranteed to be unique.
           return guess;
 
         case ElementKind.GENERATIVE_CONSTRUCTOR:
         case ElementKind.FUNCTION:
         case ElementKind.CLASS:
         case ElementKind.FIELD:
         case ElementKind.GETTER:
         case ElementKind.SETTER:
+        case ElementKind.TYPEDEF:
           String result = getFreshGlobalName(guess);
           globals[element] = result;
           return result;
 
         default:
           compiler.internalError('getName for unknown kind: ${element.kind}',
                                  node: element.parseNode(compiler));
       }
     }
   }
@@ skipping 11 matching lines @@
   }
 
   String isolateBailoutAccess(Element element) {
     return '${isolateAccess(element)}\$bailout';
   }
 
   String operatorIs(Element element) {
     return 'is\$${getName(element)}';
   }
 }